Congregational Prayer and Its Virtue
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 57
وَ رَوَى عَنْهُ حَمَّادُ بْنُ عُثْمَانَ أَنَّهُ قَالَ: «مَنْ صَلَّى مَعَهُمْ فِي اَلصَّفِّ اَلْأَوَّلِ كَانَ كَمَنْ صَلَّى خَلْفَ رَسُولِ اَللَّهِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ فِي اَلصَّفِّ اَلْأَوَّلِ.
It is narrated from him by Hammad ibn Uthman that Imam عليه السلام said: "Whoever prays with them in the first row, it is as if he prayed behind the Messenger of Allah صلى الله عليه وعلى آله وسلم in the first row”.
- Ṣaḥīḥ al-Faqīh